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GS016 – Simplified metadata
Dataset
- Database Code
- GS016
- Title
- Coarse woody debris, amount and distribution of in Lookout Creek, Andrews Experimental Forest 1991
- Abstract
- These data describe the amount and distribution of coarse woody debris on the valley floor of the mainstem of Lookout Creek and characterizing it in relation to river morphology. Data include the number, volume, location, orientation, decay class, and pool formation roles of large wood debris pieces. River morphology is characterized by cross-section data (sampled every 100 m) and in sketch map in the Nakamura and Swanson (1994) publication. This was a one-time sample in 1991 employing simple tape and compass field techniques (Nakamura and Swanson 1994). Data tables cover 1. wood piece measurements (diameter, length, location, decay class) and 2. channel geometry measurements.
- Keywords
- geomorphology; disturbance; woody debris; coarse woody debris; organic matter; aquatic ecosystems; streams; disturbance; organic matter
- Date begin
- 1991-01-07
- Date end
- 1991-01-09
- Principal Investigator
- Frederick J. Swanson
Entities
- GS01601
- GS01602
1. GS01601 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| STCODE | varchar | freetext | |||
| FORMAT | numeric(1) | range | 1.0000 | 1.0000 | number |
| LOGNUM | numeric(1) | range | 1.0000 | 1692.0000 | number |
| SITENUM | numeric(1) | range | 1.0000 | 1107.0000 | number |
| ANGLE | varchar | enum | |||
| SECTNUM | numeric(1) | range | 1.0000 | 85.0000 | number |
| SUSPEND | varchar | enum | |||
| MAINSTRM | varchar | enum | |||
| SIDESTRM | varchar | enum | |||
| ABNDSTRM | varchar | enum | |||
| SANDBAR | varchar | enum | |||
| SIDESLOP | varchar | enum | |||
| TERRACE | varchar | enum | |||
| BOULDER | varchar | enum | |||
| LOG | varchar | enum | |||
| POOL | varchar | enum | |||
| DIAM1 | numeric(1.000000) | range | 2.0000 | 175.0000 | centimeters |
| DIAM2 | numeric(1.000000) | range | 3.0000 | 170.0000 | centimeters |
| LENGTH | numeric(0.100000) | range | 0.8000 | 50.0000 | meters |
| TOTLOGVOL | numeric(0.010000) | range | 0.0100 | 56.5700 | cubic meters |
| DECOMP | varchar | enum | |||
| MULTFCTR | numeric(0.010000) | range | 0.1000 | 1.0000 | number |
2. GS01602 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| STCODE | varchar | freetext | |||
| FORMAT | numeric(1) | range | 2.0000 | 2.0000 | number |
| SECTNUM | numeric(1) | range | 1.0000 | 85.0000 | number |
| NUMLOGS | numeric(1.000000) | range | 0.0000 | 126.0000 | number |
| VOLUME | numeric(0.010000) | range | 0.0000 | 249.4100 | cubic meters |
| AREA1 | numeric(0.010000) | range | 4.6700 | 35.4500 | square centimeters |
| WIDTH | numeric(0.010000) | range | 9.3400 | 70.9000 | meters |
| THWGLEN | numeric(0.010000) | range | 4.8300 | 7.5300 | centimeters |
| SUMTHWG | numeric(0.010000) | range | 10.1200 | 19.3300 | centimeters |
| DIRTHWG | numeric(0.010000) | range | 8.9900 | 17.3600 | centimeters |
| LSINUOUS | numeric(0.010000) | range | 0.9900 | 1.7100 | number |
| GEOMTYPE | varchar | enum | |||
| NUMCHANS | varchar | enum | |||
| BOULDERS | varchar | enum |
Attribute definitions
- ABNDSTRM
- Is log in abandoned channel
- ANGLE
- Angle of log to channel (acute angle)
- AREA1
- Map area of the section (including channels, floodplains, and bars)
- BOULDER
- Is log touching a boulder > 1 meter in diameter
- BOULDERS
- Presence of boulders >= 1 meter in diameter
- DECOMP
- Decomposition code
- DIAM1
- Diameter of log at one end
- DIAM2
- Diameter of log at other end (if diam1 = diam2, log was measured in the midd le only)
- DIRTHWG
- Direct map length from upstream end of preceding section thalweg to downstream end of following section thalweg.
- FORMAT
- Format
- GEOMTYPE
- Geomorphic type code
- LENGTH
- Length of log
- LOG
- Is log touching another log
- LOGNUM
- Log number
- LSINUOUS
- Sinuousity - sumthwg / dirthwg
- MAINSTRM
- Is log in main channel
- MULTFCTR
- Multiplication factor to correct volume measurement to reflect the true volu me of the log in the channel area
- NUMCHANS
- Number of channels code
- NUMLOGS
- Number of logs in the section
- POOL
- Did log contribute to pool formation (see nakamura paper for criteria)
- SANDBAR
- Is log in a sandbar or floodplain
- SECTNUM
- Number of 50 meter channel section
- SIDESLOP
- Is log on side slope
- SIDESTRM
- Is log in side channel
- SITENUM
- Site number
- STCODE
- Study code
- SUMTHWG
- Sum of map length of thalweg in the preceding, current, and following sections.
- SUSPEND
- Is log totally suspended
- TERRACE
- Is log on terrace
- THWGLEN
- Map length of thalweg
- TOTLOGVOL
- Volume of log computed as (pi * (diam1+diam2)*length/8) * multfctr
- VOLUME
- Volume of all logs in the section
- WIDTH
- Average section width
Enumerated domains
Enumerated domain for attribute: ANGLE
| Code | Description |
|---|---|
| 1 | 0 - 45 degrees |
| No angle measurement taken | |
| 4 | 135 - 180 degrees |
| 2 | 45 - 90 degrees |
| 3 | 90 - 135 degrees |
Enumerated domain for attribute: SUSPEND
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: MAINSTRM
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: SIDESTRM
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: ABNDSTRM
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: SANDBAR
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: SIDESLOP
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: TERRACE
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: BOULDER
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: LOG
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: POOL
| Code | Description |
|---|---|
| 1 | Yes |
| No |
Enumerated domain for attribute: DECOMP
| Code | Description |
|---|---|
| 2 | Bark partially attatched, log hard |
| 5 | Extremely decayed log |
| 1 | Bark tight, log hard |
| 3 | No bark, log hard |
| 4 | No bark, log soft |
Enumerated domain for attribute: GEOMTYPE
| Code | Description |
|---|---|
| 4 | Ave section width < 19.0 meters, sinuousity < 1.09 (type nst in paper) |
| 2 | Section width > 19.0 meters, sinuousity < 19.0 meters (type wst in paper) |
| 3 | Ave section width < 19.0 meters, sinuousity > 1.09 (type nsi in paper) |
| 1 | Section width > 19.0 meters, sinuousity > 1.09 (type wsi in paper) |
Enumerated domain for attribute: NUMCHANS
| Code | Description |
|---|---|
| S | Single channel in section |
| M | Multiple channels in section |
Enumerated domain for attribute: BOULDERS
| Code | Description |
|---|---|
| B | Boulders >= 1 meter in diam exist in the section |